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Finding the Fourth Proportional to 61,335.28, 91,999.68 and 19,782.28

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Solution

The fourth proportional to 61,335.28, 91,999.68 and 19,782.28 is: 29,672.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,335.28 : 91,999.68 = 19,782.28 : x
  2. Step 2: Convert to fraction form
    61,335.28/91,999.68 = 19,782.28/x
  3. Step 3: Cross multiply
    61,335.28x = 91,999.68 × 19,782.28
  4. Step 4: Simplify right side
    61,335.28x = 1,819,963,429.67
  5. Step 5: Solve for x
    x = 1,819,963,429.67/61,335.28
  6. Step 6: Final answer
    x = 29,672.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.